King road drag

Variations of the two-plank drag design but pulled by trucks or tractors are still used today to smooth the dirt infields of baseball diamonds.

The logs were staggered so that dirt would be pushed to the center to create a crown so that water would rush off.

The very simple design replaced the old practice of dragging a road with a single log which left the surface unrepaired and rut-filled.

[3] He also wrote articles such as one that appeared in the May 7, 1910 issue of the Saturday Evening Post entitled “Good Roads Without Money.” King would further enhance his invention with his patent 1,102,671 in 1914 which included four bars and two triangular scrapers.

For instance, they allowed Sears, Roebuck to start sending out its catalogs to small towns and farms and thereby vastly increase the size of its customer base.

David Ward King, Inventor of the King Road Drag
Contemporary Drawing of the King Road Drag
Road Drag Patent